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Fertility Glossary

Assisted hatching

Thinning or opening the embryo's outer shell before transfer.

IVF & IUI

Assisted hatching uses a laser or other method to thin or breach the zona pellucida so the embryo can emerge more easily. Evidence of benefit for most patients is weak, and it is generally considered only in specific circumstances. It carries a small additional cost and is classed as an add-on.

Also known as: laser hatching, AH

Sources

  • Cochrane reviews of IVF add-ons

Last reviewed: 8 September 2026. Written by the Antega Editorial Team. General information only β€” always follow the advice of your own clinic, doctor or pharmacist.

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